Download pflex-rm002 - Rockwell Automation

Chapter 1
Detail Drive Configuration and Operation
Limit Generator
The limit generator generates a high and low limit based on an input.
• The input parameter 206 [LimGen X axis In] is a linkable destination for
floating point parameters. The input range is 0.0000…1.0000.
• The output is equal to parameter 205 [LimGen Y axis Mn] when the input
is equal to 0.0000.
• The output is equal to parameter 204 [LimGen Y axis Mx] when the input
is equal to 1.0000.
• The output is available as a positive output parameter 207 [Limit Gen Hi
Out] and a negative output parameter 208 [Limit Gen Lo Out].
Limit Gen Hi Out
207
LimGen X axis In
-1
206
-1
+1
Limit Gen Lo Out
208
Limit Generator
Voltage Class
LimGen Y axis Mn
205
LimGen Y axis Mx
204
PowerFlex drives are sometimes referred to by voltage “class.” This class identifies
the general input voltage to the drive. This general voltage includes a range of
actual voltages. For example, a 400 Volt Class drive will have an input voltage
range of 380…480VAC. While the hardware remains the same for each class,
other variables, such as factory defaults, catalog number and power unit ratings
will change. In most cases, all drives within a voltage class can be reprogrammed
to another drive in the class by resetting the defaults to something other than
“factory” settings. Parameter 403 [Voltage Class] can be used to reset a drive to a
different setup within the voltage class range.
As an example, consider a 480V drive. This drive comes with factory default
values for 480V, 60 Hz with motor data defaulted for U.S. motors (HP rated,
1750 rpm, etc.) By setting the [Voltage Class] parameter to “Low Voltage” (this
represents 400V in this case) the defaults are changed to 400V, 50 Hz settings
with motor data for European motors (kW rated, 1500 rpm, etc.).
180
Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013